JBA Cat4Ward 1-1/2in Raw 409SS Shorty Headers for 1988-2003 Chevy/GMC S-Series 4WD (4.3L)

Fits select 1988-2003 Chevrolet S10, S10 Blazer, Blazer and GMC S15, Sonoma, and Jimmy 4WD models (4.3L V6).

JBA Cat4Ward shorty headers are a precision-engineered performance upgrade designed to replace restrictive factory cast-iron manifolds. By reducing backpressure, these headers significantly improve the engine's breathing ability, resulting in a noticeable increase in power and efficiency across the RPM range. Each set is constructed from 409 stainless steel to withstand the high temperatures and stresses of heavy towing and daily driving.

These headers feature JBA's proprietary Firecone collector, a race-proven technology that directs exhaust flow for maximum scavenging and torque gains. The mandrel-bent 1-1/2 inch primary tubes ensure a consistent internal diameter for smooth flow, while the heavy-duty 3/8-inch machined flanges provide a stable sealing surface to prevent leaks at the cylinder head.

• Manufacturer Part Number: 1840S-3
• 1-1/2 inch mandrel-bent 409 stainless steel primary tubing
• 3/8-inch thick machined flanges with oversized exhaust ports
• Proprietary JBA Firecone collector design
• Extra-thick collector domes for a reliable seal
• Includes factory-style emission connections and high-quality hardware
• Raw stainless steel finish